but governor brown wants voters to support his ballot initiative, proposition 30. it raises the sales tax a quarter of a percent for the next four years and raise income tax on those making more than $250,000 annually for the next seven years. >> proposition 30 is pretty simple, a temporary tax that goes into a fund that can only go to schools. >> this political expert from the berkeley institute of government studies says that the governor can only guarantee the money will go to education this year, because it is in the budget. >> after that it is harder to say. the money goes into the general fund, the governor and legislature decide what the general fund will be spent on, and it is hard to say what would happen in future years. a proposition 38 as a good job of locking away the money for education. so however much it brings in, most of that money will go to education. >> jerry brown's measure will raise $6 billion while proposition 38 would bring in $10 billion. they're both temporary, proposition 830 taxes will last between four and seven years and proposition